Method for recovering cobalt in waste lithium cobalt oxide positive electrode material

• Main Authors: ZHANG ZHEMING, WANG WENWEI, BIAN HAIDONG
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a method for recovering cobalt in a waste lithium cobalt oxide positive electrode material. The recovery method comprises the following steps: adding lithium cobalt oxide powder into organic acid for full reaction to obtain cobalt-containing solid powder, and calcining the cobalt-containing solid powder in an air atmosphere to obtain Co3O4 powder. The Co3O4 powder with small particle size and large specific surface area can be obtained through the recovery method. Therefore, the application field of Co3O4 can be further expanded. 本发明公开了一种废旧钴酸锂正极材料中钴的回收方法。本发明的回收方法包括将钴酸锂粉末加入到有机酸中充分反应，得到含钴固体粉末，再将含钴固体粉末置于空气氛围下煅烧，得到Co3O4粉末。通过本发明的回收方法可以得到颗粒尺寸细小、比表面积大的Co3O4粉末。因此，可进一步拓展Co3O4的应用领域。